Antimicrobial and antioxidant properties of<i>Betula aetnensis</i>Rafin. (Betulaceae) leaves extract

Acquaviva, Rosaria; Menichini, Francesco; Ragusa, S.; Genovese, Carlo; Amodeo, Andrea; Tundis, Rosa; Loizzo, Monica Rosa; Iauk, L.

doi:10.1080/14786419.2012.695364

Cited by 16 publications

(9 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Birch leaf extracts are known to exhibit a number of pharmacological activities such as anticancer, antifungal, diuretic, antimicrobial, anti infl ammatory etc. [2][3][4] Antioxidant activity has also been reported, mainly due to the terpenes and fl avonoids contained. 3 In our previous studies various model extracts of birch leaf have been developed by varying the type of solvent and the extraction method.…”

Section: Introductionmentioning

confidence: 99%

Antioxidant Activity of Dry Birch (Betula Pendula) Leaves Extract

et al. 2018

View full text Add to dashboard Cite

Background: Betula pendula is widespread in Europe and Asia. It has been used in traditional medicine since ancient times. Birch leaf extracts are known to exhibit a number of pharmacological activities. Antioxidant activity has also been reported. Aim: The aim of this work was to investigate the antioxidant activity of a dry leaf extract from Betula pendula Roth. Materials and methods: The total flavonoid content was determined. Some of the most commonly used methods were applied to evaluate the antioxidant capacity of the extract in vitro and in vivo. The ability of the extract to scavenge DPPH free radicals was evaluated by the method described by Brand-Williams with suitable modifications. ABTS decolorization assay was also applied. The in vivo assay was performed after acute and chronic administration of the extract into white albino rats, in a dose of 100 and 500 mg/kg bw. The antioxidant potential of the plasma was determined using FRAP reagent. Results: A total flavonoid content of 42.5 mg/g was found, expressed as quercetin. The antioxidant activity against ABTS was concentration and time dependent. For example the concentration of 200 μg/ml led to 70.95% – 99.46% scavenging activity. DPPH scavenging activity was found to be about 98% at a concentration of 80 μg/ml. The extract possesses antioxidant potential, comparable with that of Trolox, in acute application. In chronic application, poorer results are observed, probably due to biotransformation and elimination processes. Conclusion: Dried birch leaf extract has a relatively high antioxidant potential and could be used as a natural source of antioxidants.

show abstract

Section: Introductionmentioning

confidence: 99%

Antioxidant Activity of Dry Birch (Betula Pendula) Leaves Extract

et al. 2018

View full text Add to dashboard Cite

show abstract

“…Superoxide anion was generated in vitro as described by Acquaviva et al 2012 [ 36 ]. A total volume of 1 mL of the assay mixture contained: 100 mM triethanolamine-diethanolamine buffer, pH 7.4, 3 mM NADH, 25 mM/12.5 mM EDTA/MnCl 2 , 10 mM β-mercapto-ethanol; samples contained different concentrations of the three (aqueous, methanolic and dichloromethane) extracts of leaves of Tithonia diversifolia (Hemsl.)…”

Section: Methodsmentioning

confidence: 99%

Effects of Tithonia diversifolia (Hemsl.) A. Gray Extract on Adipocyte Differentiation of Human Mesenchymal Stem Cells

et al. 2015

Self Cite

View full text Add to dashboard Cite

Tithonia diversifolia (Hemsl.) A. Gray (Asteraceae) is widely used in traditional medicine. There is increasing interest on the in vivo protective effects of natural compounds contained in plants against oxidative damage caused from reactive oxygen species. In the present study the total phenolic and flavonoid contents of aqueous, methanol and dichloromethane extracts of leaves of Tithonia diversifolia (Hemsl.) A. Gray were determined; furthermore, free radical scavenging capacity of each extract and the ability of these extracts to inhibit in vitro plasma lipid peroxidation were also evaluated. Since oxidative stress may be involved in trasformation of pre-adipocytes into adipocytes, to test the hypothesis that Tithonia extract may also affect adipocyte differentiation, human mesenchymal stem cell cultures were treated with Tithonia diversifolia aqueous extract and cell viability, free radical levels, Oil-Red O staining and western bolt analysis for heme oxygenase and 5'-adenosine monophoshate-activated protein kinase were carried out. Results obtained in the present study provide evidence that Tithonia diversifolia (Hemsl.) A. Gray exhibits interesting health promoting properties, resulting both from its free radical scavenger capacity and also by induction of protective cellular systems involved in cellular stress defenses and in adipogenesis of mesenchymal cells.

show abstract

“…Superoxide anion was generated in vitro as described by Acquaviva et al . [24]. A total volume of 1 mL of the assay mixture contained 100 mM triethanolamine-diethanolamine buffer, pH 7.4, 3 mM NADH, 25 mM/12.5 mM EDTA/MnCl 2 , 10 mM β-mercaptoethanol; samples contained different concentrations (1.75-17.5-88-175 μg/mL) of the three (aqueous, methanolic and dichloromethane) extracts of leaves of M. foetida Schumach.…”

Section: Methodsmentioning

confidence: 99%

Antioxidant Activity of Extracts of Momordica Foetida Schumach. et Thonn.

et al. 2013

Self Cite

View full text Add to dashboard Cite

Momordica foetida Schumach. et Thonn. (Cucurbitaceae) is a perennial climbing herb with tendrils, found in swampy areas in Central Uganda. Antidiabetic and antilipogenic activities were reported for some Momordica species, however the mechanism of action is still unknown. Oxidative stress may represent an important pathogenic mechanism in obesity-associated metabolic syndrome. The present study evaluated free radical scavenging capacity of different concentrations of aqueous, methanolic and dichloromethane leaf extracts of Momordica foetida Schumach. et Thonn. and the ability of these extracts to inhibit in vitro plasma lipid peroxidation; in addition, healthy human adipose mesenchymal stem cell cultures were used in order to test the hypothesis that these extracts may affect adipocyte differentiation. Results obtained in this study suggested that aqueous extract might be useful in preventing metabolic syndrome.

show abstract

Antimicrobial and antioxidant properties ofBetula aetnensisRafin. (Betulaceae) leaves extract

Cited by 16 publications

References 6 publications

Antioxidant Activity of Dry Birch (Betula Pendula) Leaves Extract

Antioxidant Activity of Dry Birch (Betula Pendula) Leaves Extract

Effects of Tithonia diversifolia (Hemsl.) A. Gray Extract on Adipocyte Differentiation of Human Mesenchymal Stem Cells

Antioxidant Activity of Extracts of Momordica Foetida Schumach. et Thonn.

Contact Info

Product

Resources

About